From e534a310c7e99c44d93855ad5865ad5e985039ba Mon Sep 17 00:00:00 2001
From: jeresig <jeresig@gmail.com>
Date: Wed, 2 Dec 2009 19:05:51 -0500
Subject: [PATCH] Added in the new .closest(Array) method, will be used to
 improve the performance of live filtering.

---
 src/traversing.js       |   40 +++++++++++++++++++++++++++++++---------
 test/unit/traversing.js |   11 +++++++++++
 2 files changed, 42 insertions(+), 9 deletions(-)

diff --git a/src/traversing.js b/src/traversing.js
index b5a5a2d..737efa4 100644
--- a/src/traversing.js
+++ b/src/traversing.js
@@ -54,21 +54,43 @@ jQuery.fn.extend({
 		return this.pushStack( winnow(this, selector, true), "filter", selector );
 	},
 
-	closest: function( selector, context ) {
-		var pos = jQuery.expr.match.POS.test( selector ) ? 
-			jQuery( selector, context || this.context ) : null;
+	closest: function( selectors, context ) {
+		if ( jQuery.isArray( selectors ) ) {
+			var ret = [], cur = this[0], selector;
+
+			if ( cur ) {
+				for ( var i = 0, l = selectors.length; i < l; i++ ) {
+					selectors[i] = jQuery.expr.match.POS.test( selector ) ? 
+						jQuery( selector, context || this.context ) :
+						selectors[i];
+				}
+
+				while ( cur && cur.ownerDocument && cur !== context ) {
+					for ( var i = 0; i < selectors.length; i++ ) {
+						selector = selectors[i];
+						if ( selector.jquery ? selector.index(cur) > -1 : jQuery(cur).is(selector) ) {
+							selector = selector.selector || selector;
+							ret.push({ selector: selector, elem: cur });
+							selectors.splice(i--, 1);
+						}
+					}
+					cur = cur.parentNode;
+				}
+			}
+
+			return ret;
+		}
+
+		var pos = jQuery.expr.match.POS.test( selectors ) ? 
+			jQuery( selectors, context || this.context ) : null;
 
-		return this.map(function(){
-			var cur = this, closer = 0;
+		return this.map(function(i, cur){
 			while ( cur && cur.ownerDocument && cur !== context ) {
-				if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
-					jQuery.lastCloser = closer;
+				if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selectors) ) {
 					return cur;
 				}
 				cur = cur.parentNode;
-				closer++;
 			}
-			jQuery.lastCloser = -1;
 			return null;
 		});
 	},
diff --git a/test/unit/traversing.js b/test/unit/traversing.js
index 780d30f..22d4868 100644
--- a/test/unit/traversing.js
+++ b/test/unit/traversing.js
@@ -107,6 +107,17 @@ test("closest()", function() {
 	same( jq.closest("#nothiddendiv", document.body).get(), q("nothiddendiv"), "Context not reached." );
 });
 
+test("closest(Array)", function() {
+	expect(6);
+	same( jQuery("body").closest(["body"]), [{selector:"body", elem:document.body}], "closest([body])" );
+	same( jQuery("body").closest(["html"]), [{selector:"html", elem:document.documentElement}], "closest([html])" );
+	same( jQuery("body").closest(["div"]), [], "closest([div])" );
+	same( jQuery("#main").closest(["span,#html"]), [{selector:"span,#html", elem:document.documentElement}], "closest([span,#html])" );
+
+	same( jQuery("body").closest(["body","html"]), [{selector:"body", elem:document.body}, {selector:"html", elem:document.documentElement}], "closest([body, html])" );
+	same( jQuery("body").closest(["span","html"]), [{selector:"html", elem:document.documentElement}], "closest([body, html])" );
+});
+
 test("not(Selector)", function() {
 	expect(7);
 	equals( jQuery("#main > p#ap > a").not("#google").length, 2, "not('selector')" );
-- 
1.7.10.4